I'm having trouble with some transitions. What I want to do is a simple cross dissolve or mix. The CROSS option does not work. I have plenty of vid on both pieces of vid. The "dissolve" starts with the lead vid zooming in and going to about 50% level (nearing black). The vid coming out does another zoom out. Most other transitions are OK. I've checked quite a few. One that doesn't work is AIRPLANE, though when I hover over the icon with the mouse, the "effect" animates. But when I put it on the timeline, nothing but black.
Also, how the heck do you change transition lengths? I had PD7 previous to this, and it was on the timeline as an option. And it wasn't grayed out on the dropdown of options.
Thanks in advance for any help.